Progress in development of an interferometric oil manometer

S. Ehlers, W. Sabuga

Abstract


At PTB, a new interferometric oil manometer for the measurement of pressures below 2 kPa, is in development. This paper describes how the main quantities, length and liquid density, are determined, both in-situ, the latter for the first time in a primary pressure standard. The key features of both methods are presented.

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DOI: http://dx.doi.org/10.21014/acta_imeko.v9i5.995